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2-Ketobutyric acid (5)CAS RN:600-18-0
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Eastar Chemical CorporationTelephone:001-949 388 3803
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Penta Manufacturing CompanyTelephone:+1-973-740-2300
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Pyrazine SpecialtiesTelephone:4045246744
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Penta Manufacturing Co. / Div. of Penta International Corp.Telephone:(973)740-2300
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Clariant Pharmaceutical Fine ChemicalsTelephone:+1 704 331 70 00